<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<title>Source code</title>
<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
</head>
<body>
<div class="sourceContainer">
<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2007 The Guava Authors<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package com.google.common.base;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import com.google.common.annotations.GwtCompatible;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import javax.annotation.Nullable;<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>/**<a name="line.23"></a>
<span class="sourceLineNo">024</span> * Determines a true or false value for a given input.<a name="line.24"></a>
<span class="sourceLineNo">025</span> *<a name="line.25"></a>
<span class="sourceLineNo">026</span> * &lt;p&gt;The {@link Predicates} class provides common predicates and related utilities.<a name="line.26"></a>
<span class="sourceLineNo">027</span> *<a name="line.27"></a>
<span class="sourceLineNo">028</span> * &lt;p&gt;See the Guava User Guide article on &lt;a href=<a name="line.28"></a>
<span class="sourceLineNo">029</span> * "http://code.google.com/p/guava-libraries/wiki/FunctionalExplained"&gt;the use of {@code<a name="line.29"></a>
<span class="sourceLineNo">030</span> * Predicate}&lt;/a&gt;.<a name="line.30"></a>
<span class="sourceLineNo">031</span> *<a name="line.31"></a>
<span class="sourceLineNo">032</span> * @author Kevin Bourrillion<a name="line.32"></a>
<span class="sourceLineNo">033</span> * @since 2.0 (imported from Google Collections Library)<a name="line.33"></a>
<span class="sourceLineNo">034</span> */<a name="line.34"></a>
<span class="sourceLineNo">035</span>@GwtCompatible<a name="line.35"></a>
<span class="sourceLineNo">036</span>public interface Predicate&lt;T&gt; {<a name="line.36"></a>
<span class="sourceLineNo">037</span>  /**<a name="line.37"></a>
<span class="sourceLineNo">038</span>   * Returns the result of applying this predicate to {@code input}. This method is &lt;i&gt;generally<a name="line.38"></a>
<span class="sourceLineNo">039</span>   * expected&lt;/i&gt;, but not absolutely required, to have the following properties:<a name="line.39"></a>
<span class="sourceLineNo">040</span>   *<a name="line.40"></a>
<span class="sourceLineNo">041</span>   * &lt;ul&gt;<a name="line.41"></a>
<span class="sourceLineNo">042</span>   * &lt;li&gt;Its execution does not cause any observable side effects.<a name="line.42"></a>
<span class="sourceLineNo">043</span>   * &lt;li&gt;The computation is &lt;i&gt;consistent with equals&lt;/i&gt;; that is, {@link Objects#equal<a name="line.43"></a>
<span class="sourceLineNo">044</span>   *     Objects.equal}{@code (a, b)} implies that {@code predicate.apply(a) ==<a name="line.44"></a>
<span class="sourceLineNo">045</span>   *     predicate.apply(b))}.<a name="line.45"></a>
<span class="sourceLineNo">046</span>   * &lt;/ul&gt;<a name="line.46"></a>
<span class="sourceLineNo">047</span>   *<a name="line.47"></a>
<span class="sourceLineNo">048</span>   * @throws NullPointerException if {@code input} is null and this predicate does not accept null<a name="line.48"></a>
<span class="sourceLineNo">049</span>   *     arguments<a name="line.49"></a>
<span class="sourceLineNo">050</span>   */<a name="line.50"></a>
<span class="sourceLineNo">051</span>  boolean apply(@Nullable T input);<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>  /**<a name="line.53"></a>
<span class="sourceLineNo">054</span>   * Indicates whether another object is equal to this predicate.<a name="line.54"></a>
<span class="sourceLineNo">055</span>   *<a name="line.55"></a>
<span class="sourceLineNo">056</span>   * &lt;p&gt;Most implementations will have no reason to override the behavior of {@link Object#equals}.<a name="line.56"></a>
<span class="sourceLineNo">057</span>   * However, an implementation may also choose to return {@code true} whenever {@code object} is a<a name="line.57"></a>
<span class="sourceLineNo">058</span>   * {@link Predicate} that it considers &lt;i&gt;interchangeable&lt;/i&gt; with this one. "Interchangeable"<a name="line.58"></a>
<span class="sourceLineNo">059</span>   * &lt;i&gt;typically&lt;/i&gt; means that {@code this.apply(t) == that.apply(t)} for all {@code t} of type<a name="line.59"></a>
<span class="sourceLineNo">060</span>   * {@code T}). Note that a {@code false} result from this method does not imply that the<a name="line.60"></a>
<span class="sourceLineNo">061</span>   * predicates are known &lt;i&gt;not&lt;/i&gt; to be interchangeable.<a name="line.61"></a>
<span class="sourceLineNo">062</span>   */<a name="line.62"></a>
<span class="sourceLineNo">063</span>  @Override<a name="line.63"></a>
<span class="sourceLineNo">064</span>  boolean equals(@Nullable Object object);<a name="line.64"></a>
<span class="sourceLineNo">065</span>}<a name="line.65"></a>




























































</pre>
</div>
</body>
</html>
